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Cross-linked polyolefin heat-shrinkable film with good printability and preparation method thereof

A technology of cross-linking poly and olefin heat, applied in the field of polyolefin heat shrinkable film, can solve the problems of falling, no longer suitable for printing, etc., and achieve the effect of stable surface tension and good printability

Active Publication Date: 2021-11-26
GUANGDONG ANDELI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing polyolefin heat shrinkable film used for surface printing, as time goes on, its surface tension will drop greatly compared with the film just off the line, and it is no longer suitable for printing

Method used

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  • Cross-linked polyolefin heat-shrinkable film with good printability and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Raw material preparation:

[0029] Outer layer:

[0030] 65wt% LDPE (2.16kg pressure, 0.5g / 10min melt index at 190°C)

[0031] 20wt% mLDPE (2.16kg pressure, 1.5g / 10min melt index at 190°C)

[0032] 10wt% maleic anhydride modified polyethylene (2.16kg pressure, 2g / 10min melt index at 190°C)

[0033] 5wt% silicone anti-blocking masterbatch;

[0034] Core layer:

[0035] 70wt% LDPE (2.16kg pressure, 1.5g / 10min melt index at 190°C)

[0036] 20wt% mLDPE (2.16kg pressure, 1.5g / 10min melt index at 190°C)

[0037] 6wt% erucamide smooth masterbatch

[0038] 4wt% N,N-methylenebisacrylamide crosslinking initiator masterbatch;

[0039] inner layer:

[0040] 65wt% LDPE (2.16kg pressure, 0.5g / 10min melt index at 190°C)

[0041] 30wt% mLDPE (2.16kg pressure, 1.5g / 10min melt index at 190°C)

[0042] 5wt% silicone anti-blocking masterbatch.

[0043] Preparation Process:

[0044] The raw materials of each layer are mixed in proportion and melted and plasticized with a screw e...

Embodiment 2

[0049] Outer layer:

[0050] 58.5wt% LDPE (2.16kg pressure, 0.5g / 10min melt index at 190°C)

[0051] 35wt% mLDPE (2.16kg pressure, 1.5g / 10min melt index at 190°C)

[0052] 5wt% maleic anhydride modified polyethylene (2.16kg pressure, 2g / 10min melt index at 190°C)

[0053] 1.5wt% silicone anti-blocking masterbatch;

[0054] Core layer:

[0055] 60wt% LDPE (2.16kg pressure, melt index at 190°C is 1.5g / 10min)

[0056] 25wt% mLDPE (2.16kg pressure, 1.5g / 10min melt index at 190°C)

[0057] 10wt% erucamide smooth masterbatch

[0058] 5wt% N,N-methylenebisacrylamide crosslinking initiator masterbatch;

[0059] inner layer:

[0060] 63.5wt% LDPE (2.16kg pressure, 0.5g / 10min melt index at 190°C)

[0061] 35wt% mLDPE (2.16kg pressure, 1.5g / 10min melt index at 190°C)

[0062] 1.5wt% silicone anti-blocking masterbatch.

[0063] Preparation Process:

[0064]The raw materials of each layer are mixed in proportion and melted and plasticized with a screw extruder respectively. The ...

Embodiment 3

[0069] Outer layer:

[0070] 65wt% LDPE (2.16kg pressure, 0.5g / 10min melt index at 190°C)

[0071] 24wt% mLDPE (2.16kg pressure, 1.5g / 10min melt index at 190°C)

[0072] 7wt% maleic anhydride modified polyethylene (2.16kg pressure, 2g / 10min melt index at 190°C)

[0073] 4wt% silicone anti-blocking masterbatch;

[0074] Core layer:

[0075] 65wt% LDPE (2.16kg pressure, melt index at 190°C is 1.5g / 10min)

[0076] 20wt% mLDPE (2.16kg pressure, 1.5g / 10min melt index at 190°C)

[0077] 10wt% erucamide smooth masterbatch

[0078] 5wt% N,N-methylenebisacrylamide crosslinking initiator masterbatch;

[0079] inner layer:

[0080] 61.5wt% LDPE (2.16kg pressure, 0.5g / 10min melt index at 190°C)

[0081] 34wt% mLDPE (2.16kg pressure, 1.5g / 10min melt index at 190°C)

[0082] 4.5wt% silicone anti-blocking masterbatch.

[0083] Preparation Process:

[0084] The raw materials of each layer are mixed in proportion and melted and plasticized with a screw extruder respectively. The tem...

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Abstract

The invention provides a cross-linked polyolefin heat-shrinkable film with good printability and a preparation method thereof. A cross-linked polyolefin heat-shrinkable film with good printability, including an outer layer, a core layer and an inner layer laminated in sequence. The preparation method of the cross-linked polyolefin heat-shrinkable film with good printability: mix the raw materials of each layer in proportion, melt and plasticize them separately, and then enter the multi-layer parallel tapered die for co-extrusion to obtain a multi-layer melted film. body, the multi-layer melt is inflated to obtain a film bubble, and then cooled and shaped to obtain a multi-layer blown film tube; the multi-layer blown film tube is exhausted, irradiated and cross-linked, and then heated, sized and cooled, Then, the cross-linked polyolefin heat-shrinkable colored film is obtained by synchronously stretching horizontally and vertically, and finally performing heat-setting treatment and cooling, flattening, trimming, corona treatment, and winding. The cross-linked polyolefin heat shrinkable film with good printability provided by the application has stable surface tension and good printability.

Description

technical field [0001] The invention relates to the field of polyolefin heat-shrinkable films, in particular to a cross-linked polyolefin heat-shrinkable film with good printability and a preparation method thereof. Background technique [0002] Polyolefin heat shrinkable film is a packaging material with a very broad market prospect. With the continuous expansion of packaging requirements, a polyolefin heat-shrinkable film that can be printed well has become a product with great demand in the market. [0003] The existing polyolefin heat-shrinkable film used for surface printing, as time goes on, its surface tension will drop greatly compared with the film just off the line, and it is no longer suitable for printing. The development of a polyolefin heat-shrinkable film with stable surface tension has become a hot spot in research and development. [0004] In view of this, the present invention is proposed. Contents of the invention [0005] The first object of the pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/06B32B37/06B32B37/08B32B37/10C08L23/06C08L51/06C08L83/04C08K5/20C08J5/18
CPCB32B27/08B32B27/32B32B37/06B32B37/08B32B37/10C08J5/18C08J2323/06C08J2423/06C08J2451/06C08J2483/04C08K5/20
Inventor 王丹旭苏阳陈捷新张春生
Owner GUANGDONG ANDELI NEW MATERIALS CO LTD
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